EP 1105552 B1 20021204 - SLOW CONSUMABLE NON-CARBON METAL-BASED ANODES FOR ALUMINIUM PRODUCTION CELLS
Title (en)
SLOW CONSUMABLE NON-CARBON METAL-BASED ANODES FOR ALUMINIUM PRODUCTION CELLS
Title (de)
LANGSAM VERZEHRENDE, KOHLENSTOFFFREIE ANODEN AUF BASIS VON METALLEN FÜR ALUMINIUM-ELEKTROGEWINNUNGSZELLEN
Title (fr)
ANODES NON CARBONEES LENTEMENT FUSIBLES A BASE DE METAL POUR CELLULES DE PRODUCTION D'ALUMINIUM
Publication
Application
Priority
- IB 9901358 W 19990730
- IB 9900015 W 19990108
- US 12620598 A 19980730
Abstract (en)
[origin: US2001013474A1] A non-carbon, metal based slow-consumable anode of a cell for the electrowinning of aluminum self-forms during normal electrolysis an electrochemically-active oxide-based surface layer (20). The rate of formation (35) of the layer (20) is substantially equal to its rate of dissolution (30) at the surface layer/electrolyte interface (25) thereby maintaining its thickness substantially constant, forming a limited barrier controlling the oxidation rate (35). The anode (10) usually comprises an alloy or iron at least one of nickel, copper, cobalt or zinc which during use forms an oxide surface layer (20) mainly containing ferrite.
IPC 1-7
IPC 8 full level
C25C 3/12 (2006.01)
CPC (source: EP US)
C25C 3/12 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
US 2001013474 A1 20010816; US 6436274 B2 20020820; AU 4794699 A 20000221; DE 69904339 D1 20030116; DE 69904339 T2 20030828; EP 1105552 A1 20010613; EP 1105552 B1 20021204; WO 0006805 A1 20000210
DOCDB simple family (application)
US 72858100 A 20001201; AU 4794699 A 19990730; DE 69904339 T 19990730; EP 99931414 A 19990730; IB 9901358 W 19990730